Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.
A255788
Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.
Terms
- a(0) =715a(1) =884a(2) =2141a(3) =5240a(4) =13857a(5) =38889a(6) =110678a(7) =318089a(8) =924343a(9) =2692440a(10) =7849989a(11) =22916697a(12) =66947552a(13) =195579671a(14) =571460971a(15) =1669900630a(16) =4879839649a(17) =14260067745a(18) =41672230910a(19) =121779090341a(20) =355876611009
External references
- oeis: A255788